Github user zentol commented on the issue:
https://github.com/apache/flink/pull/3736
@greghogan My simple answer is that its feature freeze. There has to be
some point in time where new features, regardless of size, stability etc. can't
make it into a release. My understanding is that we decided to make the feature
freeze date this point in time. When something like this is put into place it
naturally follows that some contributions that are ready around the time of the
FF will not be merged. Given that the FF was already delayed by a week,
implicitly giving every contribution a 1 week grace period, I don't see a
reason to make an exception here. It wasn't merged before the FF; it wasn't
merged before the delayed FF, so it's not going into the release.
That's my take on the whole thing.
PS: Me closing this PR was not meant to imply "and that's the end of it". I
just amended the commit before this discussion started and didn't remove it.
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